Highway zero-carbon service area system based on comprehensive utilization of hydrogen energy

Abstract

The application discloses a highway zero-carbon service area system based on hydrogen energy comprehensive utilization, which comprises a distributed photovoltaic power generation module, a hydrogen production by electrolysis module and a hydrogen storage module.The distributed photovoltaic power generation module is used for photovoltaic power generation to provide power for daily electricity consumption of the service area and the hydrogen production by electrolysis module; the hydrogen production by electrolysis module is used for hydrogen production by electrolysis of water according to the power provided by the distributed photovoltaic power generation module; the hydrogen storage module is used for storing the hydrogen produced by the hydrogen production by electrolysis module and supplying the hydrogen to a hydrogen fuel cell module and a hydrogen refueling station; and the hydrogen fuel cell module is used for converting the hydrogen into electric energy to realize night electricity consumption and refrigeration and heating of the service area.The application can solve the problems of high energy consumption and large carbon emission of the existing highway service area, and can make the highway service area clean and green and reduce carbon emission.

Description

TECHNICAL FIELD

[0001] The application relates to a highway zero-carbon service area system based on comprehensive utilization of hydrogen energy and belongs to the technical field of hydrogen energy utilization. BACKGROUND

[0002] Hydrogen energy is abundant, green, low-carbon and widely used, is an important part of the future national energy system, and is an important carrier for realizing green and low-carbon transformation of energy terminals. In recent years, with the progress of technology and policy promotion, hydrogen energy has developed rapidly in the fields of transportation and electric power.

[0003] Photovoltaic water electrolysis hydrogen production - hydrogen storage - hydrogen fuel cell power generation is an effective way to realize clean and efficient comprehensive utilization of hydrogen energy. Using clean energy such as photovoltaic, hydrogen can be produced by electrolysis of water, which can solve the high carbon emission problem of traditional fossil fuel hydrogen production and meet the green and low-carbon development concept of hydrogen energy; hydrogen produced by clean energy can be converted into electricity by hydrogen fuel cells, and the power generation process is pollution-free, noiseless and efficient. Combined with the hydrogen storage module, the stable output of electric energy can be realized, and the shortcomings of poor stability of photovoltaic modules and no power output at night can be overcome.

[0004] As a supporting infrastructure of the highway, the highway service area has a large number of service areas, large power consumption and high energy consumption. The construction of photovoltaic power generation facilities, electrolytic hydrogen production facilities and hydrogen fuel cell power generation facilities in the service area makes the energy use of the service area green and zero-carbon, which is of great significance for energy saving and emission reduction.

[0005] The information disclosed in the background section of this document is only intended to increase the understanding of the overall background of the application and should not be considered as an acknowledgment or any form of suggestion that this information constitutes prior art known to those of ordinary skill in the art. SUMMARY

[0006] The purpose of the present application is to overcome the shortcomings of the prior art, provide a highway zero-carbon service area system based on comprehensive utilization of hydrogen energy, solve the problems of high energy consumption and large carbon emission of the current highway service area, and make the energy use of the highway service area clean and green and reduce carbon emission.

[0007] To achieve the above-mentioned purpose, the present application is realized by using the following technical scheme:

[0008] The application discloses a highway zero-carbon service area system based on comprehensive utilization of hydrogen energy, comprising a distributed photovoltaic power generation module, an electrolytic hydrogen production module, a hydrogen storage module, a hydrogen fuel cell module and a hydrogen refueling station,

[0009] The distributed photovoltaic power generation module is connected to the electrolytic hydrogen production module, the hydrogen gas input end of the hydrogen storage module is connected to the electrolytic hydrogen production module, and the hydrogen gas output end of the hydrogen storage module is connected to the hydrogen fuel cell module and the hydrogen refueling station, respectively;

[0010] The distributed photovoltaic power generation module is used for photovoltaic power generation to provide power for daytime electricity consumption of the service area and hydrogen production by electrolysis;

[0011] The electrolytic hydrogen production module is used for hydrogen production by electrolysis of water according to the power provided by the distributed photovoltaic power generation module to generate hydrogen;

[0012] The hydrogen storage module is used for storing the hydrogen generated by the electrolytic hydrogen production module and supplying the hydrogen to the hydrogen fuel cell module and hydrogen refueling station;

[0013] The hydrogen fuel cell module is used for converting the hydrogen into electric energy to realize nighttime electricity consumption and refrigeration and heating of the service area.

[0014] Further, the distributed photovoltaic power generation module, the electrolytic hydrogen production module and the hydrogen fuel cell module are respectively connected to a 0.4KV bus of the service area;

[0015] The 0.4KV bus of the service area is connected to a 10KV bus of the service area through a transformer.

[0016] Further, the distributed photovoltaic power generation module comprises photovoltaic strings, a first inverter, a photovoltaic grid-connected cabinet and a bus box, and the bus box is connected to the photovoltaic strings;

[0017] The photovoltaic strings are connected to the 0.4KV bus of the service area through the first inverter and the photovoltaic grid-connected cabinet; wherein 5-15 photovoltaic strings are connected to one first inverter, and 2-3 first inverters are connected to one photovoltaic grid-connected cabinet, and the photovoltaic grid-connected cabinet is connected to the 0.4KV bus of the service area;

[0018] The photovoltaic strings are arranged on a photovoltaic station area, and the photovoltaic station area comprises a roof photovoltaic area, a ground photovoltaic area, a carport top photovoltaic area and a highway slope photovoltaic area.

[0019] Further, the electrolytic hydrogen production module comprises a rectifier, a dual-power switching device, an electrolytic hydrogen production device, an alkali solution tank and a pure water preparation device;

[0020] An electric input end of the electrolytic hydrogen production device is connected to the dual-power switching device, one end of the dual-power switching device is connected to the 0.4KV bus of the service area through the rectifier, and the other end of the dual-power switching device is connected to the bus box of the distributed photovoltaic power generation module;

[0021] A water input end of the electrolytic hydrogen production device is connected to the pure water preparation device through the alkali solution tank.

[0022] Further, the electrolytic hydrogen production device comprises a skid-mounted alkaline electrolytic water hydrogen production equipment, and the pure water preparation device comprises a skid-mounted electric desalination water production equipment.

[0023] Further, the hydrogen storage module comprises a first hydrogen compressor and a first hydrogen storage tank,

[0024] The input end of the first hydrogen compressor is connected with the hydrogen output port of the electrolytic hydrogen production device, and the output end of the first hydrogen compressor is connected with the first hydrogen storage tank.

[0025] Further, the first hydrogen compressor comprises a diaphragm type hydrogen compressor, and the first hydrogen storage tank comprises a hydrogen torpedo storage tank.

[0026] Further, the hydrogen fuel cell module comprises a hydrogen fuel cell, a second inverter, a heating and water supply and return unit and an absorption refrigeration unit, and the hydrogen fuel cell comprises a proton exchange membrane fuel cell stack;

[0027] The hydrogen fuel cell is connected with the second inverter and accesses the service area 0.4KV bus;

[0028] The hydrogen input end of the hydrogen fuel cell is connected with the first hydrogen storage tank.

[0029] The hydrogen fuel cell is connected with the heating and water supply and return unit and the absorption refrigeration unit to realize heating and refrigeration based on the heat of the hydrogen fuel cell.

[0030] Further, the hydrogen refueling station comprises a skid-mounted hydrogen refueling station, and the skid-mounted hydrogen refueling station comprises a gas unloading tank, a second hydrogen compressor, a second hydrogen storage tank and a hydrogen refueling machine connected in sequence;

[0031] The gas unloading tank is connected with the first hydrogen storage tank.

[0032] Further, the sum of the annual output power supply electric quantity of the distributed photovoltaic power generation module and the annual output power supply electric quantity of the hydrogen fuel cell module is greater than the annual power consumption of the service area;

[0033] The installed capacity of the distributed photovoltaic power generation module is greater than or equal to the self power consumption of the service area and the power consumption of the electrolytic hydrogen production module within a preset first time threshold.

[0034] The hydrogen production scale of the electrolytic hydrogen production module within a preset second time threshold is greater than or equal to the hydrogen gas consumption of the hydrogen fuel cell module when there is no photovoltaic output within a preset third time threshold.

[0035] The capacity of the hydrogen storage module is greater than the hydrogen gas consumption of the hydrogen fuel cell module within a preset fourth time threshold.

[0036] The installed capacity of the hydrogen fuel cell module is greater than or equal to the self power consumption of the service area within a preset third time threshold.

[0037] Compared with the prior art, the present application has the following beneficial effects:

[0038] The present invention provides a zero-carbon highway service area system based on the comprehensive utilization of hydrogen energy, which solves the problems of high energy consumption and large carbon emissions in existing highway service areas, enabling highway service areas to use energy in a clean and green manner and reduce carbon emissions.

[0039] This invention, based on integrated hydrogen energy services, proposes a technical route combining photovoltaic hydrogen production, hydrogen storage, hydrogen refueling, and hydrogen power generation. Applied to the construction of highway service areas, it can solve the problems of high electricity consumption, high energy levels, and high carbon emissions in service areas, achieving green and zero-carbon energy use. Furthermore, the construction concept and scheme proposed in this invention are also applicable to similar areas such as station areas, factory areas, and industrial parks. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of a zero-carbon service area system for highways based on the comprehensive utilization of hydrogen energy.

[0041] In the diagram: 1. Photovoltaic string; 2. First inverter; 3. Photovoltaic grid-connected cabinet; 4. Combiner box; 5. Transformer; 6. Rectifier; 7. Dual power supply switching device; 8. Electrolytic hydrogen production device; 9. Alkali tank; 10. Pure water preparation device; 11. First hydrogen compressor; 12. First hydrogen storage tank; 13. Hydrogen fuel cell; 14. Second inverter; 15. Absorption chiller; 16. Gas unloading cabinet; 17. Second hydrogen compressor; 18. Second hydrogen storage tank; 19. Hydrogen refueling machine; 20. Hydrogen-powered vehicle; 21. Hydrogen long-tube trailer; 22. User load; 23. Municipal water supply pipe; 24. Heating supply and return water unit; 25. Hydrogen outlet; 26. Oxygen outlet; 27. Air conditioning chilled water pipe; 28. Cooling return water pipe; 29. ​​Heating hot water pipe; 30. Heating return water pipe. Implementation

[0042] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention. Example

[0043] This embodiment provides a zero-carbon service area system for highways based on the comprehensive utilization of hydrogen energy, including a distributed photovoltaic power generation module, an electrolysis hydrogen production module, a hydrogen storage module, a hydrogen fuel cell module, and a hydrogen refueling station.

[0044] The distributed photovoltaic power generation module is connected to the electrolysis hydrogen production module, the hydrogen input end of the hydrogen storage module is connected to the electrolysis hydrogen production module, and the hydrogen output end of the hydrogen storage module is connected to the hydrogen fuel cell module and the hydrogen refueling station respectively.

[0045] Distributed photovoltaic power generation modules are used to generate photovoltaic power to provide daytime electricity for the service area and power for the electrolysis hydrogen production module.

[0046] Electrolytic hydrogen production module for electrolyzing water to produce hydrogen according to the power provided by the distributed photovoltaic power generation module;

[0047] Hydrogen storage module for storing hydrogen produced by the electrolytic hydrogen production module and supplying hydrogen to the hydrogen fuel cell module and hydrogen refueling station;

[0048] Hydrogen fuel cell module for converting hydrogen into electrical energy to realize night-time electricity and refrigeration and heating in the service area.

[0049] As shown in the specific implementation, the following is implemented: Figure 1

[0050] The distributed photovoltaic power generation module, the electrolytic hydrogen production module and the hydrogen fuel cell module are respectively connected to the service area 0.4KV bus;

[0051] The service area 0.4KV bus is connected to the service area 10KV bus through the transformer 5 to realize local consumption and surplus electricity on the Internet.

[0052] The distributed photovoltaic power generation module includes photovoltaic string 1, first inverter 2, photovoltaic grid-connected cabinet 3 and bus box 4, and the bus box 4 is connected to the photovoltaic string 1.

[0053] The photovoltaic string 1 is connected to the service area 0.4KV bus through the first inverter 2 and the photovoltaic grid-connected cabinet 3; wherein, 5-15 photovoltaic strings 1 are connected to 1 first inverter 2, and 2-3 first inverters 2 are connected to 1 photovoltaic grid-connected cabinet 3, and the photovoltaic grid-connected cabinet 3 is connected to the service area 0.4KV bus.

[0054] The photovoltaic string 1 is arranged on the photovoltaic station area, and the photovoltaic station area includes roof photovoltaic area, ground photovoltaic area, carport top photovoltaic area and highway slope photovoltaic area.

[0055] In this embodiment, 15-20 single-crystal silicon single-sided solar modules form a photovoltaic string 1, 10 photovoltaic strings 1 are connected to 1 110kW first inverter 2, 2-3 first inverters 2 are connected to 1 0.4kV photovoltaic grid-connected cabinet 3, the photovoltaic grid-connected cabinet 3 is connected to the service area 0.4kV power bus through the transformer 5, and the service area 0.4kV power bus is connected to the power grid, i.e. the service area 10kV power bus, the service area 0.4kV power bus is connected to the user load 22 to realize local consumption and surplus electricity on the Internet.

[0056] The electrolytic hydrogen production module includes rectifier 6, dual power switching device 7, electrolytic hydrogen production device 8, alkali solution tank 9 and pure water preparation device 10.

[0057] The power input end of the electrolytic hydrogen production device 8 is connected to the dual power switching device 7, one end of the dual power switching device 7 is connected to the service area 0.4KV bus through the rectifier 6, and the other end of the dual power switching device 7 is connected to the bus box 4 of the distributed photovoltaic power generation module.​

[0058] The water input end of the electrolytic hydrogen production device 8 is connected to the pure water production device 10 through the lye tank 9. The municipal tap water is made into pure water after passing through the municipal tap water pipe 23 and the pure water production device 10, and the pure water is introduced into the lye tank 9 to supplement the electrolytic hydrogen production device 8. The electrolytic hydrogen production device 8 is a pry-mounted type, and contains auxiliary facilities such as gas washing, purification, and detection. The electrolytic hydrogen production device 8 is also provided with a hydrogen output port 25 and an oxygen output port 26.

[0059] The electrolytic hydrogen production device 8 in the embodiment includes a pry-mounted type alkaline electrolytic water hydrogen production equipment, and contains auxiliary facilities such as gas washing, purification, and detection. The pure water production device 10 includes a pry-mounted type electric desalination water production equipment. The electrolytic hydrogen production device 8 includes an electrolytic cell unit, a hydrogen purification unit, an alkali circulation unit, and a gas instrument. The electrolytic hydrogen production device 8 can accept photovoltaic power and plant power dual power supply input through the dual power supply switching device 7. On one hand, the photovoltaic group string 1 does not pass through the first inverter 2, is collected through the busbar cabinet, and is directly used for the electrolytic hydrogen production module; on the other hand, the power supply is led out from the service area 0.4KV bus, passes through the rectifier 6, and is used for the electrolytic hydrogen production module. The purpose of this setting is that the power supply used by the electrolytic hydrogen production device 8 preferentially adopts the direct current of the photovoltaic power generation module, and the power supply connected from the plant power is used as a standby power supply when the direct current power supply stability is poor.

[0060] The hydrogen storage module includes a first hydrogen compressor 11 and a first hydrogen storage tank 12. The input end of the first hydrogen compressor 11 is connected to the hydrogen output port 25 of the electrolytic hydrogen production device 8, and the output end of the first hydrogen compressor 11 is connected to the first hydrogen storage tank 12.

[0061] The first hydrogen compressor 11 in the embodiment is a diaphragm type hydrogen compressor with a boosting capacity of 20MPa; the first hydrogen storage tank 12 is a standard water volume 14m 3 , and the hydrogen filling pressure is 20MPa.

[0062] The hydrogen fuel cell module includes a hydrogen fuel cell 13, a second inverter 14, a heating water supply and return unit 24, and an absorption type refrigeration unit 15. The hydrogen fuel cell 13 includes a proton exchange membrane fuel cell stack;

[0063] The hydrogen fuel cell 13 is connected to the service area 0.4KV bus through the second inverter 14;

[0064] The hydrogen input end of the hydrogen fuel cell 13 is connected to the first hydrogen storage tank 12;

[0065] The hydrogen fuel cell 13 is connected to the heating water supply and return unit 24 and the absorption type refrigeration unit 15 to realize heating and refrigeration based on the heat of the hydrogen fuel cell 13.

[0066] The hydrogen fuel cell 13 in the embodiment is a proton exchange membrane fuel cell stack group, the output power of a single stack is 50kW, the hydrogen fuel cell module operates at night when the photovoltaic power output is zero, and the fuel cell stack group is provided with a heating and return water unit 24 and an absorption refrigeration unit 15, which are used to provide heating and refrigeration for buildings by using the heat of the fuel cell. The air conditioning cold water pipe 27 and the cold water supply pipe 28 are connected to the absorption refrigeration unit 15, the heating hot water pipe 29 and the heating return water pipe 30 are connected to the heating and return water unit 24, and the heating and return water unit 24 and the absorption refrigeration unit 15 are respectively connected to the hydrogen fuel cell 13.

[0067] When the photovoltaic power output is zero at night, the hydrogen from the hydrogen storage module is sent to the proton exchange membrane fuel cell stack group, and the generated power is connected to the 0.4kV service area power bus through the second inverter 14 to meet the power demand of the service area at night. In winter, the hot water discharged by the fuel cell stack group is directly used for building heating in the service area, and the heating return water is circulated back to the fuel cell stack group as cooling water. In summer, the hot water discharged by the fuel cell stack group is connected to the absorption refrigeration unit 15 to provide air conditioning cold water for buildings in the service area. By supplying heating hot water and setting the refrigeration unit, the hydrogen fuel cell 13 realizes cold, heat and electricity combined supply.

[0068] The hydrogen filling station includes a skid-mounted hydrogen filling station, which includes a gas unloading tank 16, a second hydrogen compressor 17, a second hydrogen storage tank 18 and a hydrogen filling machine 19 connected in sequence.

[0069] The gas unloading tank 16 is connected to the first hydrogen storage tank 12.

[0070] The second hydrogen compressor 17 in the embodiment includes a 45MPa diaphragm compressor and a 90MPa diaphragm compressor, the storage maximum pressure of the second hydrogen storage tank 18 is 90Mpa, and the hydrogen filling machine 19 has 35MPa and 70MPa filling pressures.

[0071] It should be noted that the hydrogen source of the hydrogen filling station is electrolytic hydrogen module gas supply and external hydrogen long tube trailer 21. The gas unloading tank 16 in the embodiment is also connected to the external hydrogen long tube trailer 21.

[0072] Specifically, part of the hydrogen source of the gas unloading tank 16 comes from the hydrogen storage module in the service area, and part of the hydrogen source comes from the external hydrogen long tube trailer 21, which is respectively sent to the 45Mpa second hydrogen compressor 17 and the 90Mpa second hydrogen compressor 17, and after compression, it is respectively stored in the 45Mpa second hydrogen storage tank and the 90Mpa second hydrogen storage tank. The hydrogen filling station is provided with a 35MPa hydrogen filling machine 19 and a 70MPa hydrogen filling machine 19, which can fill hydrogen for different types of hydrogen energy vehicles 20.

[0073] The module configuration method in this embodiment is as follows: first, the service area power consumption is estimated according to historical data, which can be estimated by the annual average method; the required power when the photovoltaic power cannot be output at night is calculated according to the power consumption, and the power is the required power generation of the hydrogen fuel cell 13 at night; the required hydrogen amount of the fuel cell module at night is calculated according to the above power; the electrolytic hydrogen production module scale is calculated according to the hydrogen amount, which should meet the hydrogen consumption of one hydrogen fuel cell 13 in the daytime operation of 8-10 hours; the input power required by the electrolytic hydrogen production module is calculated according to the electrolytic hydrogen production amount, and the power is provided by the photovoltaic power generation module; the installation capacity of the photovoltaic power generation module should meet the power consumption of the electrolytic hydrogen production module and the self-consumption of the service area in the daytime.

[0074] In summary, the sum of the annual output power of the distributed photovoltaic power generation module and the annual output power of the hydrogen fuel cell module is greater than the annual power consumption of the service area;

[0075] The installation capacity of the distributed photovoltaic power generation module is greater than or equal to the self-consumption of the service area and the power consumption of the electrolytic hydrogen production module within a preset first time threshold; the hydrogen production scale of the electrolytic hydrogen production module within a preset second time threshold is greater than or equal to the hydrogen consumption of the hydrogen fuel cell module when the photovoltaic power is not output within a preset third time threshold; the capacity of the hydrogen storage module is greater than the hydrogen consumption of the hydrogen fuel cell module within a preset fourth time threshold; the installation capacity of the hydrogen fuel cell module is greater than or equal to the self-consumption of the service area within the preset third time threshold.

[0076] The preset first time threshold is 8-16 hours in the daytime; the preset second time threshold is 8-10 hours in the daytime; the preset third time threshold is 8-16 hours at night; and the preset fourth time threshold is 4-7 days.

[0077] It should be noted that the distributed photovoltaic power generation module is based on photovoltaic power generation, and the specific power generation time will be adjusted accordingly according to the different annual illumination time. The electrolytic hydrogen production module uses the excess power of the distributed photovoltaic power generation module to produce hydrogen. If there is no illumination on the same day, the power supply is introduced from the service area bus to supply the self-consumption of the service area in the daytime. The installation capacity and working configuration of each module in the system are calculated based on the annual power consumption of the service area. The annual output power of the system completely covers the annual power consumption of the service area. According to the power balance principle, the energy consumption of the service area comes from clean energy, which is a zero-carbon service area.

[0078] In summary, based on hydrogen energy comprehensive service, a technical route combining photovoltaic hydrogen production, hydrogen storage, hydrogen refueling and hydrogen power generation is proposed, which can be applied to the construction of highway service areas, and can solve the problems of high power consumption and high carbon emission of service areas, and realize green and zero-carbon energy consumption of service areas.

[0079] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0080] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0081] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. A zero-carbon service area system for highways based on the comprehensive utilization of hydrogen energy, characterized in that, This includes distributed photovoltaic power generation modules, electrolysis hydrogen production modules, hydrogen storage modules, hydrogen fuel cell modules, and hydrogen refueling stations. The distributed photovoltaic power generation module is connected to the electrolysis hydrogen production module, the hydrogen input terminal of the hydrogen storage module is connected to the electrolysis hydrogen production module, and the hydrogen output terminal of the hydrogen storage module is connected to the hydrogen fuel cell module and the hydrogen refueling station respectively. The distributed photovoltaic power generation module is used to generate photovoltaic power to provide the daytime electricity for the service area and the power required for the electrolysis hydrogen production module. The electrolysis hydrogen production module is used to electrolyze water to produce hydrogen gas based on the power provided by the distributed photovoltaic power generation module. The hydrogen storage module is used to store the hydrogen generated by the electrolysis hydrogen production module and to supply hydrogen to the hydrogen fuel cell module and the hydrogen refueling station. The hydrogen fuel cell module is used to convert hydrogen into electrical energy to provide electricity and cooling / heating for the service area at night. The sum of the annual power output of the distributed photovoltaic power generation module and the annual power output of the hydrogen fuel cell module is greater than the annual electricity consumption of the service area. Wherein, the installed capacity of the distributed photovoltaic power generation module is greater than or equal to the self-consumption of the service area and the power consumption of the electrolysis hydrogen production module within a preset first time threshold. The hydrogen production capacity of the electrolysis hydrogen production module within a preset second time threshold is greater than or equal to the hydrogen consumption required by the hydrogen fuel cell module when there is no photovoltaic output within a preset third time threshold. The capacity of the hydrogen storage module is greater than the amount of hydrogen required by the hydrogen fuel cell module within a preset fourth time threshold. The installed capacity of the hydrogen fuel cell module is greater than or equal to the self-consumption of electricity in the service area within a preset third time threshold.

2. The zero-carbon service area system for highways based on comprehensive utilization of hydrogen energy according to claim 1, characterized in that, The distributed photovoltaic power generation module, the electrolysis hydrogen production module, and the hydrogen fuel cell module are respectively connected to the 0.4KV bus of the service area; The 0.4KV busbar of the service area is connected to the 10KV busbar of the service area via a transformer (5).

3. The zero-carbon service area system for highways based on comprehensive utilization of hydrogen energy according to claim 2, characterized in that, The distributed photovoltaic power generation module includes a photovoltaic string (1), a first inverter (2), a photovoltaic grid-connected cabinet (3) and a combiner box (4), wherein the combiner box (4) is connected to the photovoltaic string (1); The photovoltaic strings (1) are connected to the 0.4KV bus of the service area through the first inverter (2) and the photovoltaic grid-connected cabinet (3); wherein, every 5-15 photovoltaic strings (1) are connected to one first inverter (2), and every 2-3 first inverters (2) are connected to one photovoltaic grid-connected cabinet (3), and the photovoltaic grid-connected cabinet (3) is connected to the 0.4KV bus of the service area; The photovoltaic string (1) is installed on the photovoltaic station area, which includes a rooftop photovoltaic area, a ground photovoltaic area, a carport rooftop photovoltaic area, and a highway slope photovoltaic area.

4. The zero-carbon service area system for highways based on comprehensive utilization of hydrogen energy according to claim 3, characterized in that, The electrolytic hydrogen production module includes a rectifier (6), a dual power supply switching device (7), an electrolytic hydrogen production device (8), an alkali tank (9), and a pure water preparation device (10). The electrical input terminal of the electrolytic hydrogen production device (8) is connected to the dual power supply switching device (7). One end of the dual power supply switching device (7) is connected to the 0.4KV busbar of the service area through the rectifier (6), and the other end of the dual power supply switching device (7) is connected to the combiner box (4) of the distributed photovoltaic power generation module. The water input end of the electrolytic hydrogen production device (8) is connected to the pure water preparation device (10) through the alkali tank (9).

5. The zero-carbon highway service area system based on comprehensive utilization of hydrogen energy according to claim 4, characterized in that, The electrolytic hydrogen production device (8) includes a skid-mounted alkaline electrolytic water hydrogen production device, and the pure water preparation device (10) includes a skid-mounted electro-desalination water production device.

6. The zero-carbon highway service area system based on comprehensive utilization of hydrogen energy according to claim 4, characterized in that, The hydrogen storage module includes a first hydrogen compressor (11) and a first hydrogen storage tank (12). The input end of the first hydrogen compressor (11) is connected to the hydrogen output port (25) of the electrolytic hydrogen production device (8), and the output end of the first hydrogen compressor (11) is connected to the first hydrogen storage tank (12).

7. The zero-carbon highway service area system based on comprehensive utilization of hydrogen energy according to claim 6, characterized in that, The first hydrogen compressor (11) includes a diaphragm hydrogen compressor, and the first hydrogen storage tank (12) includes a hydrogen torpedo storage tank.

8. The zero-carbon highway service area system based on comprehensive utilization of hydrogen energy according to claim 6, characterized in that, The hydrogen fuel cell module includes a hydrogen fuel cell (13), a second inverter (14), a heating supply and return water unit (24), and an absorption chiller (15). The hydrogen fuel cell (13) includes a proton exchange membrane fuel cell stack. The hydrogen fuel cell (13) is connected to the 0.4KV bus of the service area via the second inverter (14); The hydrogen input end of the hydrogen fuel cell (13) is connected to the first hydrogen storage tank (12). The hydrogen fuel cell (13) is connected to the heating supply and return water unit (24) and the absorption chiller (15) to achieve heating and cooling based on the heat of the hydrogen fuel cell (13).

9. The zero-carbon highway service area system based on comprehensive utilization of hydrogen energy according to claim 6, characterized in that, The hydrogen refueling station includes a skid-mounted hydrogen refueling station, which includes a gas unloading cabinet (16), a second hydrogen compressor (17), a second hydrogen storage tank (18), and a hydrogen dispenser (19) connected in sequence. The unloading cabinet (16) is connected to the first hydrogen storage tank (12).

Images